Regular, reliable servicing prolongs the life of your equipment and reduces risk of breakdown and loss of production time. Birdsall provide a range of planned preventative maintenance and contracts. Based on the operation of the customer's air conditioning, heating, refrigeration or ventilation systems, we will design a preventative maintenance programme to ensure best possible performance from your system. Our service engineers are trained to maintain all types of HVAC systems. Areas serviced: Watford & Hemel Hempsteadwww.birdsall.co.ukUnit 6/Frogmore Rd, HP3 9RW

At Denco we help customers across the world create better working, living and process environments through the effective use of high performance air conditioning systems. We undertake every aspect of system design, development, manufacture, installation, commissioning and continuing support. We also provide expert advice on climate control and air processing. In fact, you could say we live and breathe air conditioning in all its forms. Areas serviced: Watford & Hemel Hempsteadwww.denco.co.ukQuantum House/Maylands Av Hemel Hempstead Industrial Est, HP2 7DE

Kooltech is one of the UK's largest independently owned distributors of Refrigeration and Air Conditioning products. Serving Consultants, Contractors and Manufacturers providing design expertise through to core product stock holding and then on to delivery where and when required. Founded in 1979, Kooltech was involved originally in manufacturing at its Glasgow site. Areas serviced: Watford & Hemel Hempsteadwww.kooltech.co.ukUnit 12/Saracen Ind Area/Mark Rd Hemel Hempstead Industrial Est, HP2 7BJ

PACAIR has emerged as one of the UK's leading independent providers offering a wealth of experience in the design and supply of air conditioning solutions to the Residential, Commercial, Leisure and Retail business sectors. Since conception, the company has seen a steady growth of business in the air conditioning sector of the building services industry. The successful growth is founded around a full comprehensive range of services across its diverse client base. Areas serviced: Watford & Hemel Hempsteadwww.pacair.co.uk110 London Rd, HP3 9SD